What is RakeSearch?

The enormous size of the diagonal Latin squares space makes it unfeasible to enumerate all its objects straightforwardly in reasonable time. So, in order to discover the structure of this space, sophisticated search methods are needed. In RakeSearch project, we implement an application that picks up separate pairs of mutually orthogonal DLSs, which allows to reconstruct full graphs of their orthogonality. You can contribute to our research by running a free program on your computer.

For account creation please use a Crunch_4Science invitation code.

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User of the Day

User profile Profile ArsenEverlast
30 years old Java developer from Lviv, Ukraine! Keen on everything connected with research of space!


Computers CPU comparison page
Dear folks!

Many computers with different CPUs perform calculations in each volunteer computing project, and a pair of results for each workunit gives information about the relative computing power of two "processor threads". Consequently, any project with data about successfully processed and verified results is a deep lake of information about CPUs. We tried to make a tool that turns this data into a more usable form and added a page with a comparison of CPU of an indicated computer with CPUs of computers that it faced during results validation.

We placed a "Compare" link in tables with a list of computers and onto the page with computer detailed description.
Comparison page contains two tables: the first table with data about the performance of a single thread and the second table with that converted into data about the overall performance of a computer considering the number of threads of computer CPU(s). Notice that most of the servers have two or more CPUs and, correspondingly, the number of threads reported by BOINC client and displayed into the table is larger than a number of threads of a single CPU in the appropriate number of times.
And, of course, this comparison is based on computing of RakeSearch application, with small consumption of RAM and usage of integer variables exclusively. But many other business workloads operate mostly with integers as well.

We hope that this data can be of help in some cases or can be interesting.

Thank you for attention to the project and participation!
14 Sep 2019, 19:04:25 UTC · Discuss

August 2019 totals
Dear participants!

Autumn has come again but, summer left a lot of gifts and one of the most glorious is an apple! Badge with this symbol of summer was granted to each participant, which computers found at least one pair with the degree of orthogonality higher or equal 86 at the start of new search - in July and August.

We congratulate the following participants:

KySU and Carl-Theodor Geilhufe (HfTL - Hochschule für Telekommunikation Leipzig),
Dima and [AF>France>TDM>Picardie>Oise] docmic92 (L'Alliance Francophone),
Pepo and [AF>Amis des Lapins] Phil1966 (L'Alliance Francophone),
terry and [AF>Amis des Lapins] chapam (L'Alliance Francophone),
Frank and [DPC]Division_Brabant~Cow_tipping (Dutch Power Cows),
ALI67 and KWSN-SpongeBob SquarePants (The Knights Who Say Ni!),
clete and [AF>France>Savoie] Tutu1986 (L'Alliance Francophone),
Игорь and [AF>Amis des Lapins] Ceclo (L'Alliance Francophone),
arkiss and [AF>WildWildWest]Sebastien (L'Alliance Francophone),
Heikki and Byron Leigh Hatch @ team Carl Sagan (Carl Sagan),
raddoc and [AF>Libristes]MortelKni (L'Alliance Francophone),
{11316} and [AF>Occitania]franky82 (L'Alliance Francophone),
Progger and [AF>Libristes]cguillem (L'Alliance Francophone),
zgf2022 and [AF>EDLS] Jakez Sulli (L'Alliance Francophone),
inugamikoubou@hangul and Shaman (Czech National Team),
Boliver and Sobolev Yevgeniy Viktorovich (Gridcoin),
Leonmer and Michael H.W. Weber (Rechenkraft.net),
Franklin and samuraiii (The Knights Who Say Ni!),
Solo Man and zelandonii (L'Alliance Francophone),
dabarlow and LeChat51X (L'Alliance Francophone),
DRandolph and Steve Dodd (The Planetary Society),
Pagliacci and Thyler Durden@P3D (Planet 3DNow!),
blaircart and Rhodan71 (L'Alliance Francophone),
koronabora and EarlyBird@Zircons (BOINC@Taiwan),
yippee0226 and Matthias Lehmkuhl (SETI.Germany),
cjc_in_484 and KAMCOBILL (X Grubbers Kick Ass),
Mark Sechin and owensse (The Planetary Society),
Kevin (USA) and Jerzy_Przytocki (BOINC@Poland),
fragamemnon and arjanscholl (Dutch Power Cows),
Martin Droppa and BlisteringSheep (Ars Technica),
[B^S]ABoskovich and Fateev Aleksey (SETIKAH@KOREA),
Skyman (Ukraine) and Wabi CZ (Czech National Team),
FourOh (SETI.USA) and fax (Meisterkuehler.de Team),
Casey ([H]ardOCP) and killik (Czech National Team),
STE\/E (BlackOps) and DoctorNow (BOINC@Heidelberg),
Buga1 (Calm Chaos) and Lee Hee Lak (SETIKAH@KOREA),
NeoGen (AMD Users) and respawner (Rechenkraft.net),
philip-in-hongkong and Rudy Toody (TeAm AnandTech),
fix (Crystal Dream) and Ralfy (BOINC Confederation),
cc-smokey (CC-Team) and [B@P] Daniel (BOINC@Poland),
Werinbert (Free-DC) and bcavnaugh (Crunching@EVGA),
Gusek (Russia Team) and ReaDy (Astronomy.Ru Forum),
AGG (Crystal Dream) and Sengieffe (UK BOINC Team),
jrle77 (IPN Mexico) and LCB001 (Hardware Canucks),
morgan (Team Norway) and froggen (BOINC@AUSTRALIA),
axels (SETI.Germany) and [SG]steini (SETI.Germany),
Derivator (Gridcoin) and Vincent Dark (Team China),
Odd-Rod (BOINCstats) and Roadranner (SETI.Germany),
conf [MM] (SETI.USA) and Landjunge (Planet 3DNow!),
Coleslaw ([H]ardOCP) and nabializm (BOINC@Poland),
jozef j (Russia Team) and yuntao.chen (Team China),
Administrator {11096} and JugNut (BOINC@AUSTRALIA),
citerra (Russia Team) and Paulteo (Crunching@EVGA),
lydy1993 (Team China) and CoolAtchOk (Russia Team),
V0d01ey (TSC! Russia) and muzzdiez (SETIKAH@KOREA),
Administrator {11320} and Dr Who Fan (BOINCstats),
Dan Sargent (SETI.USA) and herby44 (Planet 3DNow!),
JagDoc (Planet 3DNow!) and Spritex (BOINC@Denmark),
Timothy Mullican (USA) and Kodeks IT (TSC! Russia),
Gipsel (Planet 3DNow!) and Dario666 (BOINC@Poland),
Soderstromm (Gridcoin) and [B^S] fred (BOINCstats),
SerGiani (Russia Team) and kim-b-h (BOINC@Denmark),
SergOZ (Crystal Dream) and Dingo (BOINC@AUSTRALIA),
zhouyunbo (Team China) and Peter (BOINC@AUSTRALIA),
Dirk Broer (AMD Users) and sergamena (Russia Team),
silicona (Russia Team) and whizbang (Ars Technica),
Natalia (Karelia) and hoarfrost (Crystal Dream),
RFGuy_KCCO ([H]ardOCP).

And some statistics by pairs, based on results received in August and search overall.

A number of pairs broken by the degree of orthogonality (from results received in August):
Degree 81: 1642329
Degree 82: 374405
Degree 83: 75005
Degree 84: 13998
Degree 85: 2212
Degree 86: 351
Degree 87: 47
Degree 88: 8
Degree 89: 0
Degree 100: 0

A number of pairs broken by the degree of orthogonality (over the whole set of results):
Degree 81: 2150927
Degree 82: 496428
Degree 83: 98576
Degree 84: 18982
Degree 85: 2897
Degree 86: 514
Degree 87: 57
Degree 88: 12
Degree 89: 0
Degree 100: 0

Thank you for attention for the project and participation!
2 Sep 2019, 18:46:35 UTC · Discuss

RakeSearch R9 archive published!
Dear participants!

On About RakeSearch project page we published links on the archive of search on space of diagonal Latin squares of rank 9. We uploaded all results which contain "permutational" ODLS, all found graphs (but other graphs may be found or detected!), entire sets of results and workunits, and source code of several generations.

These results could not be obtained without your help. Thank you very much for participation and attention to the project!
31 Aug 2019, 20:01:16 UTC · Discuss

New version of application for Rank 10
Dear participants!

We deploy a new version of the application for search in rank 10 space. It will be faster than the previous version due to the earlier exclusion of some combinations that do not lead to a result - we add a filter for excluding combinations with the same rows in one position. Example of a similar combination you can view in July 2019 totals.

We expect that the results for the same workunit processed by the different versions of the application may differ and marked as incorrect. But in our estimation, the number of such results will be relatively small - about several tens, maybe 100 or 200. If you face with such workunits - post these numbers in this thread, please!

Thank you for attention for the project and participation!
7 Aug 2019, 21:08:17 UTC · Discuss

July 2019 totals
Dear folks!

As you know in July we started a new search - permutational diagonal Latin squares (ODLS) of rank 10. Due to lack of information about the existence of these pairs, we include into results data about found partially orthogonal pairs.
No ODLS of rank 10 found yet, but we collected the following statistics about partially orthogonal pairs from 15318 workunits processed in July :

Degree 81: 508008
Degree 82: 121883
Degree 83: 23545
Degree 84: 4979
Degree 85: 684
Degree 86: 163
Degree 87: 10
Degree 88: 4
Degree 89: 0
Degree 100: 0

One of the pairs with degree 88 looks some funny:

but the other - more usual:

We are still thinking about badges for new search (except "credit badges" of course) but for this month totals we want to congratulate the participants, which computers found pairs with degree of orthogonality of rank 86 or higher:

terry and [AF>France>TDM>Picardie>Oise] docmic92 (L'Alliance Francophone),
arkiss and [AF>Amis des Lapins] Phil1966 (L'Alliance Francophone),
Heikki and [AF>France>Savoie] Tutu1986 (L'Alliance Francophone),
raddoc and [AF>WildWildWest]Sebastien (L'Alliance Francophone),
Progger and [AF>Libristes]cguillem (L'Alliance Francophone),
zgf2022 and Michael H.W. Weber (Rechenkraft.net),
Boliver and zelandonii (L'Alliance Francophone),
Leonmer and LeChat51X (L'Alliance Francophone),
Solo Man and Steve Dodd (The Planetary Society),
dabarlow and Rhodan71 (L'Alliance Francophone),
DRandolph and eeeeee (Universite de Sherbrooke),
yippee0226 and dpc_kluizenaar (Dutch Power Cows),
GESUCHTMAN and arjanscholl (Dutch Power Cows),
faliqisbah and BlisteringSheep (Ars Technica),
Mark Sechin and Fateev Aleksey (SETIKAH@KOREA),
AlexxSaigon and [SG-2W]Kurzer (SETI.Germany),
Kevin (USA) and killik (Czech National Team),
Administrator and DoctorNow (BOINC@Heidelberg),
[B^S]ABoskovich and Shaman (Czech National Team),
FourOh (SETI.USA) and Ralfy (BOINC Confederation),
Casey ([H]ardOCP) and respawner (Rechenkraft.net),
saiz (Team China) and [B@P] Daniel (BOINC@Poland),
STE\/E (BlackOps) and Rudy Toody (TeAm AnandTech),
Buga1 (Calm Chaos) and BritishBob (Overclock.net),
NeoGen (AMD Users) and ReaDy (Astronomy.Ru Forum),
fix (Crystal Dream) and [SG]steini (SETI.Germany),
cc-smokey (CC-Team) and Vincent Dark (Team China),
AGG (Crystal Dream) and hoarfrost (Crystal Dream),
Werinbert (Free-DC) and Roadranner (SETI.Germany),
morgan (Team Norway) and Landjunge (Planet 3DNow!),
axels (SETI.Germany) and Paulteo (Crunching@EVGA),
Derivator (Gridcoin) and CoolAtchOk (Russia Team),
inugamikoubou@hangul and muzzdiez (SETIKAH@KOREA),
VogeL (SETI.Germany) and Spritex (BOINC@Denmark),
jozef j (Russia Team) and Kodeks IT (TSC! Russia),
citerra (Russia Team) and Dario666 (BOINC@Poland),
lydy1993 (Team China) and [B^S] fred (BOINCstats),
JagDoc (Planet 3DNow!) and kim-b-h (BOINC@Denmark),
Timothy Mullican (USA) and Dingo (BOINC@AUSTRALIA),
Gipsel (Planet 3DNow!) and Peter (BOINC@AUSTRALIA),
Soderstromm (Gridcoin) and sergamena (Russia Team),
SerGiani (Russia Team) and whizbang (Ars Technica),
Novalor (SETI.Germany) and RFGuy_KCCO ([H]ardOCP).

(Their number is 86 also!)
Thank you for attention to the project and participation!
3 Aug 2019, 8:27:01 UTC · Discuss

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